Python访问MySQL的步骤

• 创建connection连接，连接数据库

• 获取cursor游标对象

• 执行SQL语句

• 关闭cursor游标对象

• 关闭connection连接

  import pymysql
  user = input("username:")
  pwd = input("password:")
  conn = pymysql.connect(host="127.0.0.1", user="root", password="root123", database="homework")
  sql = "select * from info where user=%s and password=%s;"
  print(sql)
  cur = conn.cursor()
  cur.execute(sql, (user, pwd))
  print(cur.fetchone())
  

Python访问MySQL